Claude Sonnet 4
AnthropicArena Rank #3
🤖
Anthropic's balanced model offering strong coding, writing, and reasoning at a competitive price point.
Specifications
Context Window
200K
Parameters
Undisclosed
Input Price / 1M tokens
$3.00
Output Price / 1M tokens
$15.00
Arena Rank
#3
Open Source
No
Best For
Codingwritinglong documents
Pricing (per 1M tokens)
Input
$3.00
Output
$15.00
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Frequently Asked Questions
What is Claude Sonnet 4?▾
Anthropic's balanced model offering strong coding, writing, and reasoning at a competitive price point.
How much does Claude Sonnet 4 cost?▾
Claude Sonnet 4 costs $3.00 per 1M input tokens and $15.00 per 1M output tokens.
What is Claude Sonnet 4 best for?▾
Claude Sonnet 4 is best for: Coding, writing, long documents.
Is Claude Sonnet 4 open source?▾
No, Claude Sonnet 4 is a proprietary model available through Anthropic's API.